Negundo (Box Elder). Sapindaceæ.
Propagates with readiness by seeds, which should be sown as soon as ripe. Also by cuttings of mature wood, handled like grape cuttings.
Neillia. Handled the same as Spiræa, which see.
Nelumbo, Nelumbium (Water Chinquapin, Lotus, Water Bean). Nymphæaceæ.
Seeds, which may be sown in shallow pans of water in the garden, or if sown in ponds they may be incorporated in a ball of clay and dropped into the water. The seeds of some species are very hard, and germination is facilitated if they are very carefully filed or bored (see [Fig. 7]). Sections of the rhizomes may be used instead. They should always be covered with water, at least a foot or two deep, if out-doors.
Nemastylis, Nemostylis. Irideæ.
Propagation is effected by seeds, or by bulbels.
Nematanthus. Gesneraceæ.
Seeds rarely. Freely increased by cuttings, inserted in sandy soil and kept rather dry.
Nemopanthes (Mountain Holly). Ilicineæ.